diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h
index 1fe1282..9116c6d 100644
--- a/fs/btrfs/ordered-data.h
+++ b/fs/btrfs/ordered-data.h
@@ -129,7 +129,7 @@
 btrfs_ordered_inode_tree_init(struct btrfs_ordered_inode_tree *t)
 {
 	mutex_init(&t->mutex);
-	t->tree.rb_node = NULL;
+	t->tree = RB_ROOT;
 	t->last = NULL;
 }